@article{greenberg2009-19622839,
  author  = {Greenberg, S. A.},
  title   = {{How citation distortions create unfounded authority: analysis of a citation network}},
  journal = {BMJ (Clinical research ed.)},
  year    = {2009},
  doi     = {10.1136/bmj.b2680},
  pmid    = {19622839},
  url     = {https://doi.org/10.1136/bmj.b2680}
}